As stated by caretaker manager Martin O'Neill, the Columbus Crew head coach will be on the Celtic touchline for this weekend's Scottish Premiership match against Heart of Midlothian.
The manager has been part of advanced negotiations with Glasgow club for nearly a week and now looks set to wrap up a deal.
Martin O'Neill has been acting as caretaker manager for over four weeks since the previous manager stepped down, notching six wins in seven matches, cutting into the lead at the top of the league table while also steering the club to League Cup place in the final.
The veteran manager, a former boss of the club between 2000 and 2005, had already indicated he believed Sunday's match at Hibernian – which ended in a 2-1 win – would be his final act in his return at the helm.
However, O'Neill revealed he will manage the team in the midweek Premiership match against Dens Park prior to Nancy takes over.
"He is the man who will be taking over," O'Neill said to the radio station. "I thought my time was up last weekend, however there's some formalities still to be sorted. Wednesday will assuredly be my last match."
A Surreal Spell
"It's been unreal," O'Neill continued. "It feels like a chapter of your life where you think 'did all of that actually occur?' Am I pleased that I took the role? Without a doubt."
Should the Hoops beat Dundee while the Jambos see off Killie in midweek, Nancy could potentially take his new club to summit of the Premiership if they win in his first match in charge.
"It's a decent start for him versus Hearts," remarked O'Neill. "A nice introduction. It will be a tough match naturally and I wish him well. At the very least he takes over a team full of self-belief."
This self-belief stems from O'Neill's success on the field over the past month or so, where he has suffered just one defeat – a three-one loss away to the Danish side in the Europa League.
Nevertheless, the ex- Irish national team boss and his players then bounced back to achieve their first victory on the road in Europe since way back in 2021 by defeating Feyenoord 3-1 recently.
Rebuilding Belief
"We were defeated by Midtjylland," O'Neill recalled. "That was a tough game – a few weeks before they defeated Forest, so that was difficult. To travel to De Kuip and secure a victory on their patch was terrific. We've given the team an opportunity, there are three matches remaining to try to qualify, but that Feyenoord game was key for belief."
Thoughts on the Future
Upon being asked for his reflections during his spell as caretaker, O'Neill says it has led to thoughts about whether he desires to carry on in management in the future.
"I genuinely don't know," he said. "I will have a moment to reflect about things after Wednesday evening."
"It was not simple," he added. "I felt the fear of failing – that is always a major worry. I once joked that I was capable of doing the job just as poorly as a lot of other gaffers."
"I've learned much. I have had some great coaching staff alongside me and it's been a reinvigoration personally in many ways, working with young players every day."
A Potential Advisory Position?
On the subject of whether he will stay at Celtic in a consultancy role, the ex- Leicester City, Villa and Republic of Ireland manager stated this is entirely up to Nancy.
"That is really for the new boss to decide," O'Neill said. "He must be given full autonomy. Should he desire my input on things, that is acceptable. If not, that is perfectly fine at all. It becomes his team the moment he steps into the job."
Presenter Jim White concluded by asking if O'Neill if he would be emotional when the final whistle sounded on Wednesday.
"Are you asking am I going to get tearful?" O'Neill replied. "Don't be silly."
